All names: KUV 02495-0118, GALEX J025202.4-010515, US 3250, SDSS J025202.46-010515.7, Gaia DR2 2497494654805378816, [HH86] 0249-012, Gaia DR3 2497494654805378816, WIRED J025202.46-010515.7, HBQS 0249-0117, FBS 0249-013, Gaia EDR3 2497494654805378816, WD 0249-012, PB 6908
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 52 02.46 (0.09) | 02 52 02.46 | 02 52 02.46 (0.1) | 02 52 02.57 | 02 52 02.46 (0.09) | 02 52 02.46 | 02 52 01.80 | 02 52 02.46 | ||||
| Declination | -01 05 15.86 (0.07) | -01 05 15.75 | -01 05 15.86 (0.1) | -01 05 15.40 | -01 05 15.76 (0.07) | -01 05 15.73 | -01 05 13.20 | -01 05 15.74 | ||||
| Spectral type | DA | DA+K | DA | DA | DA:+M | DA: | DA+M | |||||
| Effective temperature | [K] | 63587.0 (1038) | 68631.0 (3796) | 68130.0 (1760) | 88889.0 (2195) | 80511.0 (1672) | ||||||
| log(g) | [cgs] | 7.34 (0.05) | 7.39 (0.2) | 7.47 (0.09) | 7.07 (0.07) | 7.17 (0.06) | ||||||
| Mass | [M☉] | 0.47 (0.02) | 0.53 (0.04) | 0.54 (0.02) | ||||||||
| log(Luminosity) | [L☉] | 0.94 (0.05) | ||||||||||
| Cooling age | [Gyr] | 0.0001 | 0.0006 | |||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(C/H) | ||||||||||||
| log(N/H) | ||||||||||||
| log(O/H) | ||||||||||||
| log(Na/H) | ||||||||||||
| log(Mg/H) | ||||||||||||
| log(Al/H) | ||||||||||||
| log(Si/H) | ||||||||||||
| log(P/H) | ||||||||||||
| log(S/H) | ||||||||||||
| log(Sc/H) | ||||||||||||
| log(Ti/H) | ||||||||||||
| log(Cr/H) | ||||||||||||
| log(Mn/H) | ||||||||||||
| log(Fe/H) | ||||||||||||
| log(Ni/H) | ||||||||||||
| Parallax | [mas] | 1.91 (0.1) | 2.07 (0.1) | 1.91 (0.1) | ||||||||
| Distance | [pc] | 522.94 (27) | 482.22 (34) | 1520.00 (927) | 522.93 (27) | |||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.982166902 (0.1) | -1.860592791 (0.2) | -1.982 (0.1) | -12.5 | |||||||
| Proper motion (declination) | [mas/yr] | -6.114428326 (0.09) | -6.234511502 (0.2) | -6.114 (0.09) | -0.8 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 16.43 (0.006) | 18.77 | 16.45 (0.006) | 16.50 (0.02) | 16.50 | 16.49 (0.02) | ||||||
| g magnitude | 16.85 (0.005) | 18.05 | 16.86 (0.005) | 16.85 (0.03) | 16.84 | 16.85 (0.03) | ||||||
| r magnitude | 17.28 (0.006) | 17.17 | 17.29 (0.006) | 17.35 (0.05) | 17.34 (0.05) | |||||||
| i magnitude | 17.75 (0.008) | 16.84 | 17.76 (0.008) | 17.78 (0.2) | 17.76 (0.2) | |||||||
| z magnitude | 17.99 (0.02) | 16.67 | 17.99 (0.02) | 18.01 (0.3) | 17.99 (0.3) | |||||||
| G magnitude | 17.09 | 17.14 | 17.09 (0.004) | |||||||||
| BP magnitude | ||||||||||||
| RP magnitude | ||||||||||||
| Pan g magnitude | ||||||||||||
| Pan r magnitude | ||||||||||||
| Pan i magnitude | ||||||||||||
| Pan z magnitude | ||||||||||||
| Pan y magnitude | ||||||||||||
| E(B-V) | 0.029 | |||||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.